Re: [Boost-bugs] [Boost C++ Libraries] #12094: Operator > changes attribute type

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #12094: Operator > changes attribute type
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-03-24 17:30:29

#12094: Operator > changes attribute type
-----------------------------------+----------------------
  Reporter:  mikhail.strelnikov@…  |      Owner:  djowel
      Type:  Bugs                  |     Status:  reopened
 Milestone:  To Be Determined      |  Component:  spirit
   Version:  Boost 1.61.0          |   Severity:  Problem
Resolution:                        |   Keywords:
-----------------------------------+----------------------

Comment (by mikhail.strelnikov@…):

 So, I could write ('a' >> expect[r | r]) instead? Does not compile, but
 now it is as expected. :-)

 About "don't fight":
 {{{
 std::string input = "\\n\\t\\u1234";
 ...
 parse(b, e, *('\\' > (escape_seq | unicode)), ...);
 }}}
 What type of attribute it should return? It can be
 std::vector<boost::variant<esc_ast, unicode_ast>> (where esc_ast and
 unicode_ast are inheriting from x3::position_tagged because you need this)
 or in can be simple std::string. I think you can't tell the attribute type
 just by looking at the rule.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/12094#comment:8>
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